teachman



' UNITED STATES PATENT OFFICE.

Luna s. TEAGHMAN, OF LINCOLN, NEBRASKA.

WOOD-PRESERVING COMPOSITION.

SPECIFICATION forming part of Letters Patent No. 277,810, dated May 15,1 883. Application filed February 13, 1883. (No specimens.)

To all whom it may concern Be it known that I, LUKE N. TEACHMAN, acitizen of the United States, residing at Lincoln, in the county ofLancaster and State of Nebraska, have invented certain new and usefulImprovements in Compositions for Pre serving Wood; and I do herebydeclare that the following is a full, clear, and exact description ofthe same.

This invention relates to certain new and useful improvements incompositions for preserving wood, it being particularly applicable tosuch material when used in a damp locality or under ground and theinvention consists of one part zinc sulphate, three parts sodahyposulphite, one part sulphate of copper, and one part chlorate ofpotash, combined by first pulverizing and mixing together in theproportions named, and applied to the wood in the usual manner, by firstboring a hole therein and filling the cavity with the mixture, afterwhich the hole is plugged up. After the wood has been thus treated, thecomposition, by the natural chemical action going on in the said wood,percolates through and fills the-pores, thereby preventing the souringand fermentation of the substances contained therein, this souring andfermentation being the cause of decay.

When applied to fence-posts or other wood partially embedded in theground the composition is introduced just above the ground-line, in themanner before described, the dampness of the woodunder treatment causingthe composition to dissolve and fill the pores of the wood and thusarrest fermentation, which would result'from such dampness, and therebyprevent decay.

Wood treated with this composition in the manner and proportions namedwilllast an indefinite length of time; and in the use of wood for fenceor other posts, or for sills, &c.,'where the material is exposed to thedamp, such treatment will be found very desirable in not only preventingdecay, but in saving the necessary repairs and renewal from time to timeof such posts, sills, 85c.

V The composition, being simple and inexpensive in its parts, is easilyprepared and readily applied, and can be put up and sold upon the marketin a neat and desirable manner at a comparatively small cost.

Having now fully described myinvention, what I elaimas new, and desireto secure by Letters Patent, is

A wood-preservin gcomposi tiou consisting of zinc sulphate, sodahyposulphite, sulphateot' copper, and chlorate of potash, insubstantially the proportions named, for the purpose set forth.

In testimony that I claim the above I have' hereunto subscribed my namein the presence of two witnesses.

LUKE" N. TEAOHMAN.

Witnesses:

CLARK WELLMAN, G. J. EURLY.

